$\tan\left(-x\right)\cos x=\sin x$
$2x^2-x-36$
$\frac{4}{x}+\frac{2}{x-1}=4$
$f\left(x\right)=6^3-4\cdot6^2$
$\log_{10}\left(x^{46}\right)=2$
$\int\frac{1}{x\sqrt{16x^2-5}}\:dx$
$\sqrt{3x}+5$
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